conclusions our data showed that inhalation of diazinon during pregnancy increased the hepatocyte area and hepatocyte apoptosis while it decreased the sinusoid area of the fetal liver. materials and methods twenty-five pregnant balb/c mice (25 - 30 gr) were divided into five equal groups in the animal lab of baqiyatallah university of medical sciences, tehran, iran. the normal group was without...

Many investigators have used xenogeneic, especially murine stromal cells and fetal calf serum to maintain and expand human stem cells. The proliferation and expansion of human hematopoietic stem cells in ex vivo culture were examined with the goal of generating a suitable protocol for expanding hematopoietic stem cells for patient transplantation. Using primary fetal liver cells, we established...

many investigators have used xenogeneic, especially murine stromal cells and fetal calf serum to maintain and expand human stem cells. the proliferation and expansion of human hematopoietic stem cells in ex vivo culture were examined with the goal of generating a suitable protocol for expanding hematopoietic stem cells for patient transplantation. using primary fetal liver cells, we established...

In earlier studies on chimeric animals, we found that fetal thymocytes produced peripheral T lymphocyte populations depleted of CD4+ cells. This occurred whether the fetal thymocytes matured in the presence of adult or fetal thymic stromal cells. In contrast, fetal liver cells that differentiated in the adult thymus generated normal proportions of peripheral CD4+ cells. Because fetal liver cell...

background: cell-based treatments are currently being actively received great attention among scientists and clinicians for a variety of diseases as well as diabetes .the aim of this study was to investigate the effect of allotransplantation of fetal liver-derived cell suspension in patients with type 1 diabetes. methods: patients with type 1 diabetes (n=16) aged 6-30 years-old were included in...

background: stem-cell technology has been advocated as a potentially curative option for treatment of both type 1 and type 2 diabetes. in the current study, we aimed to assess the effectiveness of allotransplantation of fetal liver-derived cells for treatment of patients with type 1 diabetes. methods: for the purpose of the current study, 72 patients with recently diagnosed type 1 dm were recru...

background: although the pathogenesis of diabetes type 1 (t1d) is not fully elucidated. different clusters of lymphocytes such as cd4+ and cd8+ t cells are involved in it. moreover, the mechanism of how stem-cell therapy results in significant therapeutic outcomes in diabetes remains obscure. in the current study, we aimed to analyze lymphocyte subsets in patients with t1d before and after trea...

The factors determining the predominantly erythroid direction of human fetal liver hematopoiesis are unknown. We compared the capacities of human fetal liver and bone marrow stromas to sustain fetal and adult hematopoiesis in long-term cultures. In various marrow-fetal liver combinations of stroma and recharge. the maintenance of erythroid (BFU-e) and myeloid (CFU-GM) precursors in the nonadher...

The factors determining the predominantly erythroid direction of human fetal liver hematopoiesis are unknown. We compared the capacities of human fetal liver and bone marrow stromas to sustain fetal and adult hematopoiesis in long-term cultures. In various marrow-fetal liver combinations of stroma and recharge. the maintenance of erythroid (BFU-e) and myeloid (CFU-GM) precursors in the nonadher...

Pyrrolizidine alkaloids (PAs) are extensively synthesized by plants, are commonly present in herbs and foodstuffs, and exhibit hepatotoxicity requiring metabolic activation by cytochrome P450 3A to form the electrophilic metabolites-pyrrolic esters. PAs also cause embryo toxicity, but the metabolic profiles of PAs in fetus and placenta have been far from clear. In this study, we determined the ...